The Junta de Andalucia is investing €411,218 to improve the water treatment plant and collection network in Comares.
Work has started in Benalmádena Pueblo to improve and modernise the sewage system and is expected to be finished in December 2008.
Work on the second sewage plant in Torrox is about 40% complete and could be finished by the end of 2009.
According to an environmental group, sewage is spilling into the Rio Chillar in Nerja.
A discharge of faecal water has been contaminating the beach at Torre de Benagalbón since last Tuesday, rendering the area a bit on the smelly side.